Preparation, Structure Determination, and Electrochemical Properties of Bis{[1,4,8,11, 15,18,22,25‐octaethyl‐2,3,9,10,16,17,23,24‐octakis(methylthio)phthalocyaninato]titanium(IV)} Benzene‐1,2,4,5‐tetrathiolate